import time
from datetime import datetime, timedelta

from flask import current_app
from flask import g, jsonify
from flask import redirect
from flask import render_template
from flask import request
from flask import session
from flask import url_for

from info import constants, db
from info import user_login_data
from info.models import User, News, Category
from info.modules.admin import admin_blue
from info.utils.image_storage import storage
from info.utils.response_code import RET


@admin_blue.route('/add_category', methods=["POST"])
def add_category():
    """修改或者添加分类"""
    category_id = request.json.get("id")
    category_name = request.json.get("name")
    # 判断是否有参数
    if not all([category_name,category_id]):
        return jsonify(errno=RET.PARAMERR, errmsg="参数错误")
    # 判断是否有分类
    if category_id:
        try:
            category=Category.query.get(category_id)
        except Exception as e:
            current_app.logger.error(e)
            return jsonify(errno=RET.DATAERR, errmsg="数据库查询错误")

        if not category:
            return jsonify(errno=RET.NODATA, errmsg="未查询到分类信息")
        category.name = category_name
    else:
        category=Category()
        category.name = category_name
        try:
            db.session.add(category)
            db.session.commit()
        except Exception as e:
            db.session.rollback()
            current_app.logger.error(e)
            return jsonify(errno=RET.DATAERR, errmsg="保存数据错误")

    return jsonify(errno=RET.OK, errmsg="保存数据成功")


@admin_blue.route('/news_type')
def get_news_category():
    # 获取所有的分类数据
    categories = Category.query.all()
    # 定义列表保存分类数据
    categories_dicts = []

    for category in categories:
        # 获取字典
        cate_dict = category.to_dict()
        # 拼接内容
        categories_dicts.append(cate_dict)

    categories_dicts.pop(0)
    # 返回内容
    return render_template('admin/news_type.html', data={"categories": categories_dicts})

@admin_blue.route('/logout')
def admin_logout():
    session['user_id']=None
    session['nick_name']=None
    session['mobile']=None
    session['is_admin']=False
    return redirect(url_for('admin.admin_login'))


@admin_blue.route('/news_edit_detail',methods=['GET',"POST"])
def news_edit_detail():
    if request.method=="GET":
        # 1.获取并校验参数
        new_id = request.args.get('new_id')
        if not new_id:
            return render_template('admin/news_review_detail.html', data={"errmsg": "未查询到此新闻"})
        # 2.查询对应新闻信息返回给前端
        news = []
        try:
            news = News.query.filter(News.id == new_id).first()
        except Exception as e:
            current_app.logger.error(e)
        # 3.查询新闻分类
        categories=[]
        try:
            categories=Category.query.filter(Category.name!='最新').all()
        except Exception as e:
            current_app.logger.error(e)

        categories_list=[]
        for category in categories:
            categories_list.append(category.to_dict())

        data = {
            'news': news.to_dict() if news else None,
            'categories':categories_list
        }
        return render_template('admin/news_edit_detail.html',data=data)
    # 1.获取值
    news_id = request.form.get("news_id")
    title = request.form.get("title")
    digest = request.form.get("digest")
    content = request.form.get("content")
    index_image = request.files.get("index_image")
    category_id = request.form.get("category_id")
    # 1.1 判断数据是否有值
    if not all([title, digest, content, category_id]):
        return jsonify(errno=RET.PARAMERR, errmsg="参数有误")

    news = None
    try:
        news = News.query.get(news_id)
    except Exception as e:
        current_app.logger.error(e)
    if not news:
        return jsonify(errno=RET.NODATA, errmsg="未查询到新闻数据")

    # 2. 设置相关数据
    news.title = title
    news.digest = digest
    news.content = content
    news.category_id = category_id

    # 1.2 尝试读取图片
    if index_image:
        try:
            index_image = index_image.read()
        except Exception as e:
            current_app.logger.error(e)
            return jsonify(errno=RET.PARAMERR, errmsg="参数有误")

        # 3. 将标题图片上传到七牛
        try:
            key = storage(index_image)
        except Exception as e:
            current_app.logger.error(e)
            return jsonify(errno=RET.THIRDERR, errmsg="上传图片错误")
        news.index_image_url = constants.QINIU_DOMIN_PREFIX + key


    # 4. 保存到数据库
    try:
        db.session.commit()
    except Exception as e:
        current_app.logger.error(e)
        db.session.rollback()
        return jsonify(errno=RET.DBERR, errmsg="保存数据失败")
    # 5. 返回结果
    return jsonify(errno=RET.OK, errmsg="编辑成功")



@admin_blue.route('/news_edit',methods=['GET',"POST"])
def news_edit():
    """返回新闻列表"""

    page = request.args.get("p", 1)
    keywords = request.args.get("keywords", "")
    try:
        page = int(page)
    except Exception as e:
        current_app.logger.error(e)
        page = 1

    news_list = []
    current_page = 1
    total_page = 1

    try:
        filters = []
        # 如果有关键词
        if keywords:
            # 添加关键词的检索选项
            filters.append(News.title.contains(keywords))

        # 查询
        paginate = News.query.filter(*filters) \
            .order_by(News.create_time.desc()) \
            .paginate(page, constants.ADMIN_NEWS_PAGE_MAX_COUNT, False)

        news_list = paginate.items
        current_page = paginate.page
        total_page = paginate.pages
    except Exception as e:
        current_app.logger.error(e)

    news_dict_list = []
    for news in news_list:
        news_dict_list.append(news.to_basic_dict())

    data = {"total_page": total_page, "current_page": current_page, "news_list": news_dict_list}

    return render_template('admin/news_edit.html', data=data)

@admin_blue.route('/news_review_detail',methods=['GET',"POST"])
def news_review_detail():
    if request.method=="GET":
        # 1.获取并校验参数
        new_id=request.args.get('new_id')
        if not new_id:
            return render_template('admin/news_review_detail.html', data={"errmsg": "未查询到此新闻"})
        # 2.查询对应新闻信息返回给前端
        news=[]
        try:
            news=News.query.filter(News.id==new_id).first()
        except Exception as e:
            current_app.logger.error(e)

        data={
            'news':news.to_dict() if news else None
        }
        return render_template('admin/news_review_detail.html', data=data)

    # 审批操作为post请求，在此获取参数
    news_id=request.json.get("news_id")
    action=request.json.get("action")
    if not all([news_id,action]):
        return jsonify(errno=RET.PARAMERR, errmsg="参数错误")
    if action not in ("accept", "reject"):
        return jsonify(errno=RET.PARAMERR, errmsg="参数错误")
    # 查询新闻
    news = None
    try:
        news = News.query.get(news_id)
    except Exception as e:
        current_app.logger.error(e)
    if not news:
        return jsonify(errno=RET.NODATA, errmsg="未查询到数据")
    # 根据审核行为进行判断
    if action=='accept':
        news.status=0
    else:
        # 拒绝通过，需要获取原因
        reason = request.json.get("reason")
        if not reason:
            return jsonify(errno=RET.PARAMERR, errmsg="参数错误")
        news.reason = reason
        news.status = -1
        # 保存数据库
    try:
        db.session.commit()
    except Exception as e:
        current_app.logger.error(e)
        db.session.rollback()
        return jsonify(errno=RET.DBERR, errmsg="数据保存失败")
    return jsonify(errno=RET.OK, errmsg="操作成功")




@admin_blue.route('/news_review')
def news_review():
    # 1.获取参数
    page=request.args.get('p',1)
    keywords=request.args.get('keywords',None)
    try:
        page=int(page)
    except Exception as e:
        current_app.logger.error(e)
        page=1

    # 2.分页
    news=[]
    current_page=1
    total_page=1
    filter=[News.status!=0]
    if keywords:
        filter.append(News.title.contains(keywords))
    try:
        paginate=News.query.filter(*filter).order_by(News.create_time.desc()).paginate(page,constants.ADMIN_NEWS_PAGE_MAX_COUNT,False)
        current_page=paginate.page
        total_page=paginate.pages
        news=paginate.items
    except Exception as e:
        current_app.logger.error(e)

    # 3.返回数据
    news_list=[]
    for new in news:
        news_list.append(new.to_review_dict())

    data={
        'news_list':news_list,
        'current_page':current_page,
        'total_page':total_page
    }

    return render_template('admin/news_review.html',data=data)


@admin_blue.route('/user_list')
@user_login_data
def user_list():
    page=request.args.get('p',1)
    try:
        page=int(page)
    except Exception as e:
        current_app.logger.error(e)
        page=1
    users= []
    current_page=1
    total_page=1

    try:
        paginate=User.query.filter(User.is_admin==False).order_by(User.update_time.desc()).paginate(page,constants.ADMIN_USER_PAGE_MAX_COUNT,False)
        current_page=paginate.page
        total_page=paginate.pages
        users=paginate.items
    except Exception as e:
        current_app.logger.error(e)
    users_list=[]
    for user in users:
        users_list.append(user.to_admin_dict())

    data={
        'users': users,
        'current_page':current_page,
        'total_page':total_page
    }
    return render_template('admin/user_list.html',data=data)


@admin_blue.route('/user_count')
def user_count():
    # 1.查询总人数
    total_count = 0
    try:
        total_count = User.query.filter(User.is_admin == False).count()
    except Exception as e:
        current_app.logger.error(e)
    # 2.查看新增月数
    # 获取当前的时间戳
    now = time.localtime()
    mon_count = 0
    try:
        # 获取年月
        mon_begin = '%d-%02d-01' % (now.tm_year, now.tm_mon)
        # 把字符串转化为datetime类型的时间，可以存储在数据库
        mon_begin_date = datetime.strptime(mon_begin, '%Y-%m-%d')
        # 查询符合条件数据的长度
        mon_count = User.query.filter(User.is_admin == False, User.create_time >= mon_begin_date).count()
    except Exception as e:
        current_app.logger.error(e)
    # 3.查看日增人数
    day_count = 0
    try:
        day_begin = '%d-%02d-%02d' % (now.tm_year, now.tm_mon, now.tm_mday)
        day_begin_date = datetime.strptime(day_begin, '%Y-%m-%d')
        day_count = User.query.filter(User.is_admin == False, User.create_time > day_begin_date).count()
    except Exception as e:
        current_app.logger.error(e)
    # 获取当天00:00:00时间
    # 把时间戳转化为字符串时间
    # now_=datetime.now().strftime('%Y-%m-%d')
    # 把字符串时间转化为datatime类型的时间
    now_date = datetime.strptime(datetime.now().strftime('%Y-%m-%d'), '%Y-%m-%d')

    # 定义空数组，保存数据
    active_date = []
    active_count = []
    for i in range(0,31):
        begin_date = now_date - timedelta(days=i)
        end_date = now_date - timedelta(days=(i - 1))
        active_date.append(begin_date.strftime('%Y-%m-%d'))
        count = 0
        try:
            count = User.query.filter(User.is_admin == False, User.last_login >= begin_date,
                                      User.last_login < end_date).count()
        except Exception as e:
            current_app.logger.error(e)
        active_count.append(count)

    active_date.reverse()
    active_count.reverse()
    data = {
        'total_count': total_count,
        'mon_count': mon_count,
        'day_count': day_count,
        'active_date': active_date,
        'active_count': active_count
    }
    return render_template('admin/user_count.html', data=data)


@admin_blue.route('/login', methods=["GET", "POST"])
def admin_login():
    if request.method == 'GET':
        return render_template('admin/login.html')
    # 1.获取参数
    # 2.校验参数
    # 3.管理员信息保存在数据库
    username = request.form.get('username')
    password = request.form.get('password')

    if not all([username, password]):
        return render_template('admin/login.html', errmsg="参数不足")
    # 取出管理员的信息
    try:
        user = User.query.filter(User.mobile == username).first()
    except Exception as e:
        current_app.logger.error(e)
        return render_template('admin/login.html', errmsg="参数不足")

    if not user:
        return render_template('admin/login.html', errmsg="数据查询失败")

    if not user.check_password(password):
        return render_template('admin/login.html', errmsg="密码错误")

    if not user.is_admin:
        return render_template('admin/login.html', errmsg="用户权限错误")

    session['user_id'] = user.id
    session['nick_name'] = user.nick_name
    session['mobile'] = user.mobile
    session['is_admin'] = True

    return redirect(url_for('admin.admin_index', user=user))


@admin_blue.route('/index', methods=["GET", "POST"])
@user_login_data
def admin_index():
    user = g.user
    if request.method == "GET":
        user_id = session.get('user_id', None)
        is_admin = session.get('is_admin', False)
        if user_id and is_admin:
            return render_template('admin/index.html', user=user)
    return redirect(url_for('admin.admin_login'))
